Bunch-building mechanism for spinning frames



Nov. 3, 1931. J. A. JESSEN 1,830,549

BUNCH BUILDING MECHANISM FOR SPINNING FRAMES Filed June 16, 1950 2 She ecsSheet 1 N i' m a I! 2 P w R I? n w J I llilllllilllllllll Hll "j h is; I I i 3 I 1 H Will Ill m1 ll IlllHl Q L INVENTOR. 1% BY W: *M ATTORNEYS,

Nov. 3, 1931. J. A. JESSEN 1,330,549

BUNCH BUILDING MECHANISM FOR SPINNING FRAMES Filed June 16, 1930 2 Sheets-Sheet 2 INVENTOR.

M 7 MM1*M ATTORNEYS.

I 'Patented Nov. 3, 1931 UN TEn STAT S PIATE Jomv A. JESSEN, or wmrmsvrnnn, MASSACHUSETTS, AssIGNoR. T WHITIN AMA:- cnmn worms, or 'WI-IITINSVILLE, MASSACHUSETTS, A CORPORATION or MAssA- k GHUSETTS BUNC -BUIL ING MECHANISM FOR srnvnme FRAMES Application filed me 16,

This invention relates to' ring spinning frames and particularly to means for winding a bunch of yarn on the butt or'barrel of a bobbin before the regular Winding is started. This preliminary winding is provided on bobbins intended to be used in automatic looms, in which the bobbins are ejected and replaced upon indication of substantial weft exhaustion and before actual exhaustion takes place.

It is the object of my invention to provide improved and simplified mechanism for controlling the winding of the preliminary bunch and for automatically changing'over to the regular winding when a bunch of the desired size has been produced. 7 i

My inventionfurther relates to arranger ments and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings in which Fig. 1 is a front elevation of parts of a.

spinning frame ments;

Fig. 2 is a side View of the bunch building mechanism, looking in the direction ofthe arrow 2 in Fig. 1;

Fig. 3 is a view similar to Fig. 2 but showing the parts in a different position; and

Fig. 4 is an enlarged front elevation of the bunch building mechanism, with the builder lever shown in section.

Referring to the drawings, I have shown embodying my improve portions of a spinning frame including a plu- 2' rality of spindles S mounted on a fixed spin dle rail 10, and a plurality of spinning rings 11 mounted on-a ring rail 12; The ring rail is supported on lifter rods 13, slidable in bearings inthe spindle rail 10, and having feet 14 restingon rolls 15 mounted at the ends of lifter levers 16. a

The levers 16 are pivoted at 17 on fixed brackets 18 and the lever 16 nearest the left hand end of the spinning frame is provided with a segment arm 20 to which a chain 21 is 930. Serial 110143.275.

and thence downward'to awinding roll 24 (Fig. 2) mounted on apivot stud 25. on the builder lever 26. 'A worm 27 engages a worm wheel fixed to the roll 24 and provides means by which the roll is rotated to" gradually let out the chain 21 and thus change the locus of the traverse of the winding. The worm 27 is mounted on a short shaf 28-provided with a ratchet wheel 29 (Fig. 1') positioned for engagement by a feed -pawl'3O pivoted on a swinging lever 31. A rod 32-is connected to the opposite end of the lever 31 and slides freely through a bracket 33 Se cured to the spindle rail 10. Collars 34 and 35 are securedto the rod 32 and may beadjusted to vary the feeding action of the pawl 30. V I i I A cam roll (Fig. 4) ism'ounted onthe side of the builderlever 26 in position for engagement by a four-throw cam 41, c0n nected to the driving mechanism of the spinning frame and continuouslyrotated. The partsthus far described are of the usual construction and in themselves form no part of my present invention, which comprises attachments and additions which will now be described. 5

A gear is bolted to the outer face of the cam 41 and is rotated continuously therewith. An arm 51 is loosely pivoted on a stud 52 fixed in-the gear 50 and concentric with the axis thereof. v

A pair of spaced pinions 54 and an eccentric pinion 55 (Fig. 4) are secured together to rotate as a unit and are collective ly mounted to rotate freely on a stud 56-at the lower end of thearm 51. The pinions 54 are of larger, diameter than the pinion 55 and engages the continuously rotated gear. 50. Consequently the pinions 54 and55 are also continuously rotated.

A segment gear block 60 is bolted to the side of the builder lever 26 and is provided 6 T. OFFICE with segmental gear teeth 61 which are concentric with the gear 50 whenithe parts are in the position shown in Fig. 2. The angle of the gear block 60 relative to the lever 26 may be adjusted by means of upper and lower adjusting screws 62 and 63 (Fig. V "A rod orlink 65 is pivoted at 66 on the lever 51 and extends loosely through an opening in a lug or projection 67 on the side of I 70 to receive a counterweight 71.

Having described the details of construction, I will now describe the use and operation of my improved bunch-building -rnechw nlsm.

When a set of bobbins have been filled, it

is customary for theoperator to press his foot upon a projection 16 of the lifter lever 16 and thus move the ring rail 12 to its lowest position topermitconvenient doting of the bobbins. This releases the tension on the chain 21 and the builder lever 26 also moves to. its lowest position. I Such movementcauses the collar 68 on the rod65 to be engaged by the lug 67 on the gear block 60, and the arm 51 is thus swung to the position indicated in Fig. 2, with the pinions 54 and 55 substantially underneath the gear 50. As soonas the counterweight 71 passes the vertical plane of the stud 52, the counterweight continues to swing the arm 51 in a clockwise direction until a projection 75 at the lower end of the arm 51 engages a stud 76, which may be inserted in any one of a series of holes 77 in the gear block 60. 3

The operator now winds down the chain 21 on the roll 24 and removes :his weight from the lifter lever 16, whereupon the chain 21 moves the builder lever 26 upward until the teeth 61 of the gear block 60 engage the eccentric pinion 55 between the spaced pinions 54.. The parts are so proportioned that when the pinion 55 is thus engaged, the" cam roll is heldout of contact with the usual builder cam 1. I Y

If the frame is then started',the gear will be slowlyrotated to cause corresponding rotation ofthe pinions 54 and 55, also causinga swinging movement of the arm 51 in an anti-clockwise direction. During such movement the eccentric pinion 55 determines the vertical position of the builder lever 26 and the eccentricity of the pinion causes a definite but greatlyreduced traverse of the yarn on the bobbins.

This operation continues until the rotation of the eccentric pinion 55 causes it to travel oflf of the right hand end of the gear block, whereupon the roll 40 engages the cam 41 and the usual builder motion is rendered operative. The pinion'55 rotates so slowly that it rolls smoothly oif of the end of the segmental gear block and thus allows the roll 40 to engage the cam ll without jar or shock.

As soon. as the pinion 55 is clear of the teeth 61,.the counterweight 71 swings the parts to the position shown in Fig. 3, in which position the pinions 54 and 55rotate idly until the next dofling operation restores them to operative position.

The amount of yarn in the bunch may be regulated by positioning the stud 76 in different holes 77 in the gear block 60. If a hole furtherto the left is selected, the pinion 55 has a longer period of travel before it clears the gear block and consequently a larger bunch will be wound. a Having thus described the construction and operation of my improved bunchbuilder, it will be evident that by avery simple mechanism I am ableto provide a bunch on a bobbin andalsotoregulate the amount of yarn in the bunch. Furthermore it will be evident that the device is automatic in its-operation and requires no attention from the operator, being restored to operative position'by the usual procedure of the operator during the. dotting of the bobbins.

5 Having thus described my invention, I do not wish to be limited to the details herein disclosed otherwise than as set forth in the claims, but what I claim is 1. In a-spinning frame, a builder lever, a builder cam, means to rotate said cam, a gear rotatable with said cam,a segment gear on said. builder lever, a concentric pinion engaging said rotatable gear and mounted for circumferential movement about the axis of said rotatable gear, and an eccentric pinion'rotatable with said concentric pinion and engaging said segment gear when said pinlOIlS are in operative position, continuedrotation of said gears and pinions moving said pinions to inoperative position with respect to said segment gear and restoring normal operation of the builder motion.

2. In a spinning frame, a builder 'lever, a builder cam, means to rotate said cam, a gear rotatable with said cam, a segment gearon said builder lever, an arm mounted to swing about the axis of said rotatable gear, atom centric pinion mounted .onsaid arm and en-' and engaging said segment gear when said pinions are operatively positioned.

3. The combination in a spinning frame as set forthin claim 2, in which a counterweight is provided effective to hold said arm and pinions yieldingly in either operative or inoperative position. I

4. The combination in a spinning frame as set forth in claim 2, in which a stop pin is p0 sitioned to variably limit swinging movement of said arm. V j i I 1 5-. The combination in a spinning frameas set forth in claim 2, in which means is pro-- vided for moving said arm and pinions to operative position by downward swinging movement of the builder lever. 1 I

In testimony whereof I have hereunto affixed my signature. 

